package storage

import (
	"fmt"

	"gitee.com/huangxinbo/xcas/internal/config"
)

// AliyunOSS implements Storage interface for Aliyun OSS
type AliyunOSS struct {
	config *config.UploadConfig
}

// NewAliyunOSS creates a new AliyunOSS instance
func NewAliyunOSS(config *config.UploadConfig) *AliyunOSS {
	return &AliyunOSS{
		config: config,
	}
}

// Upload uploads a file to Aliyun OSS
func (s *AliyunOSS) Upload(filename string, data []byte) (string, error) {
	// TODO: Implement Aliyun OSS upload logic using official SDK
	// For now, simulate upload by returning file path
	filePath := fmt.Sprintf("oss://%s/%s", s.config.AliyunBucketName, filename)

	// In a real implementation, this would use:
	// client, err := oss.New(s.config.AliyunEndpoint, s.config.AliyunAccessKeyID, s.config.AliyunAccessKeySecret)
	// bucket, err := client.Bucket(s.config.AliyunBucketName)
	// err = bucket.PutObject(filename, bytes.NewReader(data))

	return filePath, nil
}

// Download downloads a file from Aliyun OSS
func (s *AliyunOSS) Download(filepath string) ([]byte, error) {
	// TODO: Implement Aliyun OSS download logic using official SDK
	// For now, return empty data
	// In a real implementation, this would use:
	// client, err := oss.New(s.config.AliyunEndpoint, s.config.AliyunAccessKeyID, s.config.AliyunAccessKeySecret)
	// bucket, err := client.Bucket(s.config.AliyunBucketName)
	// body, err := bucket.GetObject(filepath)
	// data, err := io.ReadAll(body)

	return []byte{}, nil
}

// Delete deletes a file from Aliyun OSS
func (s *AliyunOSS) Delete(filepath string) error {
	// TODO: Implement Aliyun OSS delete logic using official SDK
	// For now, simulate successful deletion
	// In a real implementation, this would use:
	// client, err := oss.New(s.config.AliyunEndpoint, s.config.AliyunAccessKeyID, s.config.AliyunAccessKeySecret)
	// bucket, err := client.Bucket(s.config.AliyunBucketName)
	// err = bucket.DeleteObject(filepath)

	return nil
}

// GetURL returns the public URL for a file in Aliyun OSS
func (s *AliyunOSS) GetURL(filepath string) (string, error) {
	// TODO: Implement Aliyun OSS URL generation
	return fmt.Sprintf("https://%s.%s/%s", s.config.AliyunBucketName, s.config.AliyunEndpoint, filepath), nil
}
